Check the listing for details. KEYBOARD, SCREEN DUSTER/CLEANER TWO BRUSHES!. Condition: New. Listed at 9.95 USD. Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Canned air to dust off your computer? Wow, what a gimmick that is. If you’re like us, we do not like throwing away hard-earned money on canned air. It’s madness. These brushes are soft enough to dust your screen, keyboard and system without damaging it at all…and can be used over and over. In sum, you’ll save a lot of money. Directions: dust your screen first, and then move to your keyboard or whatever else. When finished, slap the brush back and forth against a hard edge object to remove dust from the brush and Voila!! It’s new again and can used over and over to remove dust for years to come. And what’s better, its dirt cheap and you get two brushes on top of that!!! They’ll last you for years to come. You might still need canned air for the computer fans, etc. but our brushes will save you a lot of money and this is the most important part: WILL NOT SCRATCH YOUR COSTLY COMPUTER SCREEN OR WEAR AT IT.BRUSH IS 5 INCHES LONG AND THE SOFT BRISTLES ARE ABOUT 2 INCHES IN WIDTH